Electric-lamp socket.



F. A. LAVERGGMBE. ELECTRIC LAMP SOCKET.

APPLICATION FILED 310V. 21, 1908.

' Eatented Feb was.

'iB'it-EBEEIUK A. LAVEREOEIE E, 3F NEQVPQET, KENTUCKY.

sneclficstion of ills-stem Patent.

flpplication riled Zdoveinber 21, 1509. Serial. mo. 63,778.

certain new and useful Improvements in Electric-Lamp Sockets, of which.the followin r is e. specification. i

i iy invention relates to a device for securing an electric light socketto the plug through which the wires issue.

The object of the invention is to rovide a device of the screwcharacter, resdi y secessible and conveniently manipulated.

Another object of the invention is to provide the device with mesnswhich will hold the screw member rigidly to its adjusted V position. 1

It is further necessary with thisinvent-ion that these devices be cheapand simple and adapted to fit into the ordinary fixture of this typeWithout disorganizing the essential,

standard structure.

The features of the invention are more fully set fort-h in thedescription of the accompanying drawings, forming a part of thisspecification, in which Figure 1 is a central vertical section throes-hthe device when a socket-husk or covering is emoloyed. Fig. 2 is a topplan. VlQW or the 508K846. Fig. 3 is a detailed perspec ve yiew'of oneof t 1c Washers. Fig. 4.-

1S :1 sinii View of smother washer. Fig. 5 is e centrni vertical sectionthrough the device of modification when enliy thesocket is employed. 1:5g. 6 is a perspective View of edpisting screw member shown in Fig. 5.

l is the lcctric Wire plug having the screw 'end d 2, through which thewires-3 the clamping screw niembcr threaded ping portion 2, and

* d with the lugs on the lower or which the member 4-. may su h theemployment of suitthe ordinary socket having through which the plug;

washer having a spur 8 ids and posses through in the top of the socket.'sl 'hen no enijgloyed the arrangement is as zlisciosed n 5, that is,washer the in ing surfaces of the ed- :u use 4% and the to on-of thesocket l3, with the spur .23

1 projecting up- Wsroly through the orifice in the socket and impingingagainst the shoulder on the plug 1. The parts are easily assembled inthis Patented Feb. 22,

position and when the clamping member is tightened the spur 8 will diginto the plug surface and hold, the member 4i to itsposirigidly clampedto the plug.

'tion and the socket 6 will be substantially the top of the socket andthe shoulder of the plug, with the s ur 8 impinging into the undersurface of t e top portion of the hush or socket covering. In order toso port this husk or socket covering rigidly under the in fluence of theclamping member I provide the split-washer 11, having detents 12 on bothaces, This split-Washer is inserted between t e top of the husk orsocket covering and the shoulder of the plug, the deten'ts impinginginto the shoulder of plug and husk or socket covering to securely holdthe husk or socket covering in its adjusted position. Thus the husk orsocket covering and socket may be held rigidly in position relative toone another and the socketprevcntcd from turning by the manipulation ofthe clamping member 4, accessible by reaching upwardly into the socketwith a suitable instrument.

In the preferred form of my invention, the clampm'g screw member 4 is aself-con mined port of the socket, and for this purpose I provide theupper portion of the secret with an annular chamber 13 formed around themember In modification, I provide this member with an annular recess 14into which the socket flange 15 engages, so that the screw adjustingmember and its impinging vnslier are self-contained by the socket inboth. forms.

The washer 7 spur 8 have a spring action, and the nut i loosely withinthe chamber so as to al ow the Washer to drop down into the chamber.

Having described my inv 1. An electric light plu formed with s. shouiderand threaded member, a socket fitting over the threaded member, aclumping member engaging the plug; Within the socket, and e spur crusherWithin the socket having a spur impinging against the shoulder of theplug, substantially as described.

2. in combination with threaded plug, :2, lamp fixture comprising asocket piece edsis ed to fit over the plug thread, an annular chamberfenced in the top of the socket, e.

clamping nut and an impinging washer, held loosely in position in saidchamber by the g walls thereof, and adapted to frictionally clamp thesocket against the plug, and hold the clamping nut against rotation.

3. An electric light plug formed with a shoulder and a threaded member,a socket fitting over the threaded member against the shoulder, thisportion of the socket being formed With an orifice, a clamping memberengaging the plug Within the socket, a spur Washer supported on the nutwithin the socket, having the spur projecting through the orifice of thesocket and impinging against the shoulder.

4;. An electric light plug formed with a shoulder and a threaded member,a socket fitting over the threaded member against the shoulder, aclamping nut supported in the upper end of the socket and longitudinallymovable therein, and an impin ing device between the opposing surfaces 0the shoulder and socket, adapted to hold the socket against rotationwhen the nut is tightened.

5. An electric light fixture comprising a plug having a threaded portionand a shoulder, a socket formed with an inturned annu lar flange, and aclamping nut formed with an annular groove into which. the said flangeprojects holding the clamping nut loosely in position and longitudinallymovable in the upper portion of the socket With the lower end of the nutprojecting into the main portion of the socket, and an impinging devicebetween the opposing surfaces of the shouldcr and socket, adapted tohold the socket against rotation when the nut is tightened.

In testimony whereof I have hereunto set my hand.

FREDERICK A, 'LAYERGOMBE.

Witnesses: v

OLIVER B. KAISER,

L. BECK.

